I'm glad to answer your question.

if the food safety level of a food store is C (red face without smile), the food safety status of this store is average. However, the "average" also meets the eligibility criteria. If you find a restaurant with a food safety level of C (corresponding to red without smiling face), you should consider it carefully, but it is not completely impossible to eat here.

There are three kinds of facial masks that indicate the food safety level: green and smiling (for excellent, the level is A), yellow and smiling (for good, the level is B), and red and smiling (for ordinary, the level is C).

if you can't even reach grade c, this hotel will have to close down for rectification.

I hope my answer is useful to you! Have a nice day.